package com.thinkgem.jeesite.common.filter;

import com.thinkgem.jeesite.common.web.BaseController;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 * Servlet Filter implementation class URLFilter
 */
public class URLFilter extends BaseController implements Filter {

    /**
     * Default constructor. 
     */
    public URLFilter() {
    }

	/**
	 * @see Filter#destroy()
	 */
	public void destroy() {
	}

	/**
	 * @see Filter#doFilter(ServletRequest, ServletResponse, FilterChain)
	 */
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
		HttpServletRequest req = (HttpServletRequest)request;
		HttpServletResponse res = (HttpServletResponse)response;
		HttpSession session = req.getSession();
		Object user = session.getAttribute("user");
		
		String urlString = req.getRequestURI();
		if (user == null && !urlString.endsWith("login.html") && !urlString.endsWith("/doLogin")&& !urlString.endsWith("login")) {
			res.sendRedirect("/jeesite/f/login");
		} else {
			chain.doFilter(request, response);
		}
	}

	/**
	 * @see Filter#init(FilterConfig)
	 */
	public void init(FilterConfig fConfig) throws ServletException {
	}

}
